to make a short story.. both do the almost the same job (filtering, noise supression, ... ,.. ) but on different frequency range. Of course the 10uF react slower.

that was the short story. Now for a better explanation you could Google for decoupling Capacitor.
http://en.wikipedia.org/wiki/Decoupling_capacitor
http://hsi.web.cern.ch/hsi/s-link/de...c/decouple.pdf

http://www.satcure-focus.com/tutor/page6.htm